Automatic air-valve for engine intake-manifolds.



1.' A. SILSBEE.

AUTOMATIC AIR VALVE FOR ENGINE INTAKE MANIFOLDS.

APPLICATION FILED AUG-8. 1916.

1,210,991, PafentedvJan.2,1917'.

flair, 531:'5560 Be :it known-that 1,' "JAMES t. SILsir,` a citizen ofthe UnitedStates, residing at Elmira, inthe county of Chemung and State ot useful ...-mpifovein'elnts' 'iii4 Automatic Air- Vialyfesffifor 'fEngine 7' fintake-Manifolds, lot'L Whiclithe tdlloiving'ifs specification.

Thisf`invention relates to certain nevvk and useful improvements. in 'automatic air valves A for enginel intake manifolds.

sTheapriniary object ot the invention is the provision of an air inlet arranged Within the intake maiiifoldof the gasolene engine betiveenr the carbureter and explosion cham- .bers,fa controlling'dov-ice'beingprovided for the .entrance ott air! automatically varied 'and controlled"byy the speed of the motor to Which-the explosive mixture is being fed.

Af.urtlierfzobject t-` the invention is, the

.provision of anfiattac'linient adapted for cooperationiivith any standard form of fearbureter having an "intake manifold leading torl explosivek purposes inthe motor.

With these. general objects :in fvievvr and others thatkwill appear 'as the nature of the invention is'betterunderstood, the 'same consistsin the noveleonstruction, combination ,l and i arrangement fof parts 'hereinafter more ifullyt. described,V illustrated in the aecompanying drawings, and then Claimed.

lnthel d atai'ngfstoimingafpart of this applicatinn wand. in `which like designating :characters refer to" corresponding 'parts throughout-the several viewsiFigure Alis a side elevation 'of a four cylinder motor having .the- 'present device "operatively,attached thereto, illustrating lone formE 'of installation.' Eig. '2 is an enlarged detail View oftheauto'-y empl" ed with the device' 'S is a 'front ,i tfafprti'on'nf he air supply pipe.

matic air valve partia'liyF-ibrnke "awa trent levat' valve sleeve venire non andina ritrann-Maivrrniins n pe'ieicaton of Letters-Patenti f I paternit@ i iiie'fitaagusts, 191e. ffs'eiiaiiio'.' 113,684. l 'i employed."Fig.. 5 is a central longitudinah sectional vieiv of Fig. 2, and, F ig. Gfis a` transverse sectional view taken upon line vi vi of rig. e.

lt. being understood thatithe (pies'entwautomatically controlled auxiliary air intake is designed for employment with any form of internal combustion engine, such as that ot an automobile, the 'device is herein illusl trated mounted upon the upright l0 of the gasolene intake manifold 11 ot a. motor 12 having four cylinders 13 arranged in substantially the usual manner and provided with aivater circulating manifold 11. T he motor 12' is provided with an air circulating fan 15 mounted upon a y:tan shat'tor axle 16 operatively`r`r connected to the crank shaft (not shoyvn) of the motor by means ot .a f

' driving belt 17.

The present attachment is readily tapped into the manifold 11 at any desired point. such as the uprightl 10 thereof. it being understood that the device is positioned yat any pointhetvveen the carbureter (not shoyvn) and the cylinders 13.' An angular pipe 19. for supplying air is mounted upon the manifold upright 1(7)7 being provided with a manually operable vturn-oit valve 10 vvhile the said pipe is provided ivitha pear-.shaped air inlet or valve port Q0.

A valve sleeve 21 is. longitudinally slidably mounted upoirthe..Q

pipe 1S by means ot a sereiv 221 carried by the said pipe and arranged Within a longitudinal 'slot 23 in the said sleeve permitting 3 a limited longitudinal movement "ot thel latter yvhile preventing any relative-rotation ot the same. The sleeve 21 isp'rovided with a circular air inlet orfgport Q-L normally out ot ahnenient With the pear-shaped port 20 when `the sleeve is .in its loyvered position. the.' length ot the slot allowing the sleeve v91 to be elevated sutlicientlyto allow the upper edges of the ports QOand to be in alinement with each other, admitting a maximum;

amount ot air into vthe pipelS. rThe lengthy,` ot vtheslot is suh'icientkto allow the longi-v tudinal movement oi the sleeve 21 to position-theport 2l thereofl 'slightly beneath the.,:.. pear-sliapedpgrt rvvhenthe sleevey is low; ered When the valve is closel. -a nd tjhee-le-` vatedft position they port 24 tosubstantially.

open'theienti're port 2O when the sleeve ele- A vated. it being'understpod that the. action of the sleeve 21 isjunaliected'lby suction. 'y A grooveducollarl is adjustably secured to r the sleeve Q1 as by means of a set screw 26 while a band QT is revolubly journaled in the annular groove 28.0f the said sleeve.

A cylindrical head 29 is screw-threaded upon the upper end of the pipe 1S closing the. s; ne while a pulley-wheel vor disk 3() forming a. part of an automatic governor for the valve sleeve 21. is journaled upon an upper extension of the said head, being re-l tained thereon by means of a nut 31 reas by means offa belt, gears, 'universal joints, flexible shafts, direct connections and the like. For purposes of illustration, one

form is here shown. A pulley wheel 3l is secured to the fan shaft 16 over which a round belt or cord 35 is arranged operatively connecting the` wheel B-.t with the disk 30, it being understood that idl'e'rs -36 and 3T 'may be employed'for the belt 35 at convenientpoints if found desirable.,V

From this detailed description vof the invention it will be seen that the same'may be readily attached to the ,intake manifold of any engine and that the automatic operating governor 38 thereof may be connected in any manner for being'controlled by t-lie speed of thev motor whereby, the port 20 being closed when the motor is at rest, the same will be gradually opened by means of the'port Q4 of the sleeve 21 as the speed of the motor increases, operating the governor 38 to gradually elevate the valvel sleeve 21.

This device is not a carbureter nor an attachment to a. 'carbureter but is designed to work in cooperation with any standard carbureter in general use and is completely shown by the accompanying drawing though all the details of its construction as shown need not 'be' strictly .adhered to, but such changes may be made as'may be found necessary for manufact-ure or operation. The pipe 18 forms both the governo-r shaft and one of the sleeves of the sleeve valve andis fitted lwith the said valve 19' which may be entirely closed from 'time totime when it is necessary to adjust the carbureter may be done by suitable levers from the -drivers seat or by raising the hood. Be,-

sides this valve 19, the pipe may be made up of any number Vof fittings such as elbows, nipples, unions and couplings, which may be found convenient for attaching to the en' gine or for wrapping around the exhaust pipe to heat the air before entering the engine. The remainder of the device consisting of acentrifugal governor is connected to the most accessible rotating part of the engine-either by belt, bevel-gears, friction by suitable 'springs instead of by gravityV so thatv if more convenient, it may be attached in a. horizont-al positioninstead of vertical as shown.

The attachment and action of the device is as follows:v Assuming that the lower end of the pipe 18 has been tapped into the manifold 10 and the governor connected to a moving part of the engine, unscrew the .set screwQG and start the motor at a speed which is sufficient to drive the vehicle about ten miles per hour, or at amoderate speed at which it runssnioothly without skipping.

When this has been done, slide the valve 2l up by hand until the top of the round hole '21 is just at the point of the pearshaped hole 20 and at the same time note the position of the collar 25 rela-tive to the sleeve 21 and clamp them together in this posi' tion. -This may be done by oney or more set screws 26 or by having the collar threaded to the sleeve. As the mgtor and consequently the governor gradually take on greater speed, the governor balls 83 `Will spread wider apart ,raising the sleeve 21 and gradually bringing the .holes 20I and '24 one above the other, admitting air through the pipe 18 to the manifold, and when the motor slows 'down as for a rough road or` crossing a railroad, the valve will close giving the motor a rich mixture so that it will not stall. The 'principle of this device is to automatically dilute the explosive gas of an engine, with lair at ,speeds whichvpermit it, thereby using less gasolene for an equal amount of power.

sleeve may also be made up with any pacln,A

'hile lthe form' of the Iinvention herein shown and described is what is believed to be the preferred embodiment thereof, it. is nevertheless to be understood that various forms, modifications and arrangements of the parts may be made without departing from the spirit and scope of the invention as claimed.

What I claim as new is 1. A device of the class described comprising in combination with an explosive motor havingfa ga-solene intake provided withan upright, an angular pipe tapped into said upright and having a pear-shaped air inlet opening in the side thereof, a sleeve longitudinally slidable upon the said pipe having a circular air port therein adapted for registry with the said opening, pin and lslet connections between the said sleeve and pipe whereby the' said port and opening are out of alinement when the sleeve is in its lowered position and are in lopen alinernent with each other when the sleeve is elevated, a head upon the said pipe, a disk journaled upon the said head, a collar adjustably mounted upon the said Sleeve, a band revo lubly journaled upon the said collar, and weighted governor members pivotally linked between the said disk and band.

2. A device of the class described, comprising in combination with an explosive motor having a. gasolene intake provided with an upright, an angular pipe tapped into said upright and having a pear-shaped air inlet opening' in theside thereof, a sleeve longitudinally slidable4upon the said pipe having a circular air porttherein adapted for registry with the said opening, pin and slot connections between the said sleeve and pipe whereby the said port and opening are out of alinement when the sleeve is in its lowered position and are in open alinement with each other when the sleeve is elevated, a head upon the said pipe, a disk journaled upon the said head, a collar adjustably -mounted upon the said sleeve, a band revolubly journaled upon the said collar, weighted governor members pivotally linked between the said disk and band, and operable connections between. said governor and a rotating' part of the motor.

3. A dei lee of the class described comprising in combination with an explosive motor havinga gasolene intake provided with an upright, an angular pipe tapped into said upright and having a pear-shaped air inlet opening in the side thereof, a sleeve longitudinally slidable upon the said pipe having a circular air port therein adapted for reg istry with the said opening, pin and slot 'connections between the said sleeves and pipe whereby the said port and opening are out of alinement when the sleeve is in its lowered positionand are in open alinernent with each other when the sleeve is elevated, head upon the said pipe, a disk journaled upon the said head, a collar adjustably JAMES A. SILSBEE. 

